21570142871160 has 384 divisors, whose sum is σ = 80618124787200. Its totient is φ = 4961113436160.

The previous prime is 21570142871153. The next prime is 21570142871203. The reversal of 21570142871160 is 6117824107512.

21570142871160 is a `hidden beast` number, since 2 + 1 + 570 + 1 + 4 + 2 + 8 + 7 + 11 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1643914 + ... + 6770726.

It is an arithmetic number, because the mean of its divisors is an integer number (209943033300).

Almost surely, 2^{21570142871160} is an apocalyptic number.

21570142871160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21570142871160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40309062393600).

21570142871160 is an abundant number, since it is smaller than the sum of its proper divisors (59047981916040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21570142871160 is a wasteful number, since it uses less digits than its factorization.

21570142871160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126903 (or 5126896 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

Adding to 21570142871160 its reverse (6117824107512), we get a palindrome (27687966978672).

The spelling of 21570142871160 in words is "twenty-one trillion, five hundred seventy billion, one hundred forty-two million, eight hundred seventy-one thousand, one hundred sixty".